Photoinduced nonlinear optical effects in the Pr doped BiB3O6 glass nanoparticles incorporated into the polymer matrices

Photoinduced second harmonic generation was studied in Pr3+ doped bismuth triborate glasses (BiB3O6:Pr) and their nanoparticles (NP) incorporated into the polymethylmethacrylate (PMMA) and polycarbonate (PC) matrices. The process of photoinduction was performed using the simultaneous treatment by 10 ns 1064 nm Nd:YAG laser beam and its second harmonic transformed signal. It was shown that maximal effective second-order susceptibilities (up to 3.7 pm/V) were achieved for content of BiB3O6:Pr NP equal to about 4–6% in weighting units in the PC polymer matrices. After switching off of the phototreatement the decrease of the second-order susceptibility did not exceed 14%.